Home / 1,587.25-2,190.37-888.62

Finding the Fourth Proportional to 1,587.25, 2,190.37 and 888.62

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Solution

The fourth proportional to 1,587.25, 2,190.37 and 888.62 is: 1,226.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.25 : 2,190.37 = 888.62 : x
  2. Step 2: Convert to fraction form
    1,587.25/2,190.37 = 888.62/x
  3. Step 3: Cross multiply
    1,587.25x = 2,190.37 × 888.62
  4. Step 4: Simplify right side
    1,587.25x = 1,946,406.59
  5. Step 5: Solve for x
    x = 1,946,406.59/1,587.25
  6. Step 6: Final answer
    x = 1,226.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.